The Russians seized Krupp's Grusonwerk in Magdeburg, including the formula for tungsten steel.
From the en.wikipedia.org
A surge in orders for machine tools has boosted demand for tungsten steel used in cutting edges.
From the time.com
Mrs Thatcher convinced the nation she possessed a heart of tungsten steel until the day in November 1990 when she left Downing Street with a lake of tears trembling in her hurt blue eyes.
From the independent.co.uk
I had to use a box cutter to stab my way through the tungsten-steel plastic encasing a padlock I'd bought, and created numerous edges so sharp that I sliced deep into my finger.
From the orlandosentinel.com
Mixing tungsten with stainless steel reduces the cost, while still matching the density of lead.
From the newscientist.com
An insert of tungsten carbide is brazed into the steel to provide the cutting edges.
From the en.wikipedia.org
A good example is high speed steel, which can contain as much as 18% tungsten.
From the en.wikipedia.org
Alternatives, made of tungsten alloys, bismuth, steel and tin, have been available for several decades.
From the guardian.co.uk
The materials in the cutters a machinist uses are most commonly high speed steel, tungsten carbide, ceramics, Borazon, and diamond.